fix license in composer.json

Author: mathroc

composer.json

@@ -1,7 +1,7 @@
 {
     "name": "texthtml/php-lock",
     "description" : "ressource lock",
-    "license": "aGPLv3",
+    "license": "AGPL-3.0-or-later",
     "type": "library",
     "autoload": {
         "psr-4": { "TH\\Lock\\": "src" }